<?php

/*
 * File: SimpleImage.php
 * Author: Simon Jarvis
 * Copyright: 2006 Simon Jarvis
 * Date: 08/11/06
 * Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details:
 * http://www.gnu.org/licenses/gpl.html
 *
 */

class FImages_cuspo extends Foundation_cuspo {

  var $image;
  var $image_type;

  public function load($filename) {

    $image_info = getimagesize($filename);
    $this->image_type = $image_info[2];
    if ($this->image_type == IMAGETYPE_JPEG) {

      $this->image = imagecreatefromjpeg($filename);
    } elseif ($this->image_type == IMAGETYPE_GIF) {

      $this->image = imagecreatefromgif($filename);
    } elseif ($this->image_type == IMAGETYPE_PNG) {

      $this->image = imagecreatefrompng($filename);
    }
  }

  public function save($filename, $image_type = false, $compression = 75, $permissions = null) {
    if($image_type == false)
      $image_type = $this->image_type;

    if ($image_type == IMAGETYPE_JPEG) {
      imagejpeg($this->image, $filename, $compression);
    } elseif ($image_type == IMAGETYPE_GIF) {

      imagegif($this->image, $filename);
    } elseif ($image_type == IMAGETYPE_PNG) {

      imagepng($this->image, $filename);
    }
    if ($permissions != null) {

      chmod($filename, $permissions);
    }
  }

  public function output($image_type = IMAGETYPE_JPEG) {

    if ($image_type == IMAGETYPE_JPEG) {
      imagejpeg($this->image);
    } elseif ($image_type == IMAGETYPE_GIF) {

      imagegif($this->image);
    } elseif ($image_type == IMAGETYPE_PNG) {

      imagepng($this->image);
    }
  }

  public function getWidth() {

    return imagesx($this->image);
  }

  public function getHeight() {

    return imagesy($this->image);
  }

  public function resizeToHeight($height) {

    $ratio = $height / $this->getHeight();
    $width = $this->getWidth() * $ratio;
    $this->resize($width, $height);
  }

  public function resizeToWidth($width) {
    $ratio = $width / $this->getWidth();
    $height = $this->getheight() * $ratio;
    $this->resize($width, $height);
  }

  public function scale($scale) {
    $width = $this->getWidth() * $scale / 100;
    $height = $this->getheight() * $scale / 100;
    $this->resize($width, $height);
  }

  public function resize($width, $height) {
    $new_image = imagecreatetruecolor($width, $height);
    imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
    $this->image = $new_image;
  }

  public function crop($thumb_width = 300, $thumb_height = 150) {
    $image = $this->image;
    $width = $this->getWidth();
    $height = $this->getHeight();

    $original_aspect = $width / $height;
    $thumb_aspect = $thumb_width / $thumb_height;

    if ($original_aspect >= $thumb_aspect) {
      // If image is wider than thumbnail (in aspect ratio sense)
      $new_height = $thumb_height;
      $new_width = $width / ($height / $thumb_height);
    } else {
      // If the thumbnail is wider than the image
      $new_width = $thumb_width;
      $new_height = $height / ($width / $thumb_width);
    }
    $thumb = imagecreatetruecolor( $thumb_width, $thumb_height );
    // Resize and crop
    imagecopyresampled($thumb, $image, 0 - ($new_width - $thumb_width) / 2, 0 - ($new_height - $thumb_height) / 2, 0, 0,$new_width, $new_height,$width, $height);
    $this->image = $thumb;
  }

}

?>